JP4323917B2 - 相対的タイミングドリフトの低減方法 - Google Patents
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- JP4323917B2 JP4323917B2 JP2003354301A JP2003354301A JP4323917B2 JP 4323917 B2 JP4323917 B2 JP 4323917B2 JP 2003354301 A JP2003354301 A JP 2003354301A JP 2003354301 A JP2003354301 A JP 2003354301A JP 4323917 B2 JP4323917 B2 JP 4323917B2
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- pulse laser
- short pulse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
- H01S3/2383—Parallel arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/80—Devices characterised by the determination of the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
- G01P3/806—Devices characterised by the determination of the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means in devices of the type to be classified in G01P3/68
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/20—Cathode-ray oscilloscopes
- G01R13/22—Circuits therefor
- G01R13/34—Circuits for representing a single waveform by sampling, e.g. for very high frequencies
- G01R13/347—Circuits for representing a single waveform by sampling, e.g. for very high frequencies using electro-optic elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
- G01S17/18—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves wherein range gates are used
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/484—Transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/486—Receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/139—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
- H01S3/1398—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length by using a supplementary modulation of the output
Description
J.M.Evans, D.E.Spence, D.Burns, and W.Sibbet; "Dual-wavelength selfmode-locked Ti:sapphire lasers." Opt.Lett., 13, pp.1074-7, Jul.1, 1993 M.R.X.de Barros and P.C.Becker; "Two-color synchronously mode-locked femtosecond Ti:sapphire laser." Opt.Lett., 18, pp.631-3, Apr.15, 1993 D.R.Dykaar and S.B.Darak; "Stickly pulses:two-color cross-mode-locked femtosecond operation of a single Ti:sapphire laser." Opt.Lett., 18, pp.634-7, Apr.15, 1993 Z.Zhang and T.Yagi, "Dual-wavelength synchronous operation of a mode-locked Ti:sapphire laser based on self-spectrum splitting." Opt.Lett., 18, pp.2126-8, Dec.15, 1993 S.P.Dijaili, J.S.Smith, and A.Dienes, "Timing synchronization of a pasively mode-locked dye laser using a pulsed optical phase locked loop" Appl.Phisics.Lett., 55, pp.418-420, Jul.1989
135:信号発生器
210:マスターレーザー
220:スレーブレーザー
206:スプリッター(SPL)
215:ファラデー回転子ミラー(FRM)
225:光学アセンプリ(PZT−FRM)
250:レーザーダイオード(LD)
280:ファイバースプール
Claims (3)
- いずれもファイバーレーザーである第1短パルスレーザーと第2短パルスレーザーの相対的タイミングドリフトの低減方法であって、
前記第1短パルスレーザーのキャビティー長と前記第2短パルスレーザーのキャビティー長のミスマッチを低減するように、前記第1短パルスレーザーおよび前記第2短パルスレーザーを同一の装置で構成するステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーを共通のレーザーでポンピングするステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーの少なくとも一部を共通のファイバースプールに巻き付けるステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーを単一の容器内に設置して、前記第1短パルスレーザーおよび前記第2短パルスレーザーを外部環境から隔離するステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーの少なくとも一方のキャビティー長をファイバー・ストレッチャーで変更することより、前記第1短パルスレーザーのキャビティー長と前記第2短パルスレーザーのキャビティー長のミスマッチの時間平均値をゼロに維持するステップと、
を有することを特徴とする相対的タイミングドリフトの低減方法。 - いずれもファイバーレーザーである第1短パルスレーザーと第2短パルスレーザーの相対的タイミングドリフトの低減方法であって、
前記第1短パルスレーザーのキャビティー長と前記第2短パルスレーザーのキャビティー長のミスマッチを低減するように、前記第1短パルスレーザーおよび前記第2短パルスレーザーを同一の装置で構成するステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーを共通のレーザーでポンピングするステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーの少なくとも一部を共通のファイバースプールに巻き付けるステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーを単一の容器内に設置して、前記第1短パルスレーザーおよび前記第2短パルスレーザーを外部環境から隔離するステップと、
前記第1短パルスレーザーのキャビティー長と前記第2短パルスレーザーのキャビティー長のミスマッチの時間平均値をゼロに維持するステップと、
を有し、前記ファイバースプールは、遮音されていることを特徴とする相対的タイミングドリフトの低減方法。 - いずれもファイバーレーザーである第1短パルスレーザーと第2短パルスレーザーの相対的タイミングドリフトの低減方法であって、
前記第1短パルスレーザーのキャビティー長と前記第2短パルスレーザーのキャビティー長のミスマッチを低減するように、前記第1短パルスレーザーおよび前記第2短パルスレーザーを同一の装置で構成するステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーを共通のレーザーでポンピングするステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーの少なくとも一部を共通のファイバースプールに巻き付けるステップと、
前記第1短パルスレーザーおよび前記第2短パルスレーザーを単一の容器内に設置して、前記第1短パルスレーザーおよび前記第2短パルスレーザーを外部環境から隔離するステップと、
前記第1短パルスレーザーのキャビティー長と前記第2短パルスレーザーのキャビティー長のミスマッチの時間平均値をゼロに維持するステップと、
を有し、前記ファイバースプールの熱膨張係数と前記光ファイバーの熱膨張係数とが互いに一致していることを特徴とする相対的タイミングドリフトの低減方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/602,457 US5778016A (en) | 1994-04-01 | 1996-02-16 | Scanning temporal ultrafast delay methods and apparatuses therefor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP03086397A Division JP3688841B2 (ja) | 1996-02-16 | 1997-02-14 | レーザパルス比較方法、高速レーザー走査方法、高速走査レーザー装置、短パルスレーザー装置、距離計測装置、電気光学サンプリング・オシロスコープ、短パルスレーザー安定制御方法および較正時間スケール発生装置 |
Publications (2)
Publication Number | Publication Date |
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JP2004088120A JP2004088120A (ja) | 2004-03-18 |
JP4323917B2 true JP4323917B2 (ja) | 2009-09-02 |
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Application Number | Title | Priority Date | Filing Date |
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JP03086397A Expired - Fee Related JP3688841B2 (ja) | 1996-02-16 | 1997-02-14 | レーザパルス比較方法、高速レーザー走査方法、高速走査レーザー装置、短パルスレーザー装置、距離計測装置、電気光学サンプリング・オシロスコープ、短パルスレーザー安定制御方法および較正時間スケール発生装置 |
JP2003354301A Expired - Fee Related JP4323917B2 (ja) | 1996-02-16 | 2003-10-14 | 相対的タイミングドリフトの低減方法 |
JP2005128427A Expired - Fee Related JP4242364B2 (ja) | 1996-02-16 | 2005-04-26 | 相対的タイミングドリフトの低減方法、タイミングジッター減少法及び短パルスファイバーレーザーシステム |
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JP03086397A Expired - Fee Related JP3688841B2 (ja) | 1996-02-16 | 1997-02-14 | レーザパルス比較方法、高速レーザー走査方法、高速走査レーザー装置、短パルスレーザー装置、距離計測装置、電気光学サンプリング・オシロスコープ、短パルスレーザー安定制御方法および較正時間スケール発生装置 |
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JP2005128427A Expired - Fee Related JP4242364B2 (ja) | 1996-02-16 | 2005-04-26 | 相対的タイミングドリフトの低減方法、タイミングジッター減少法及び短パルスファイバーレーザーシステム |
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US (5) | US5778016A (ja) |
EP (2) | EP0790492B1 (ja) |
JP (3) | JP3688841B2 (ja) |
DE (1) | DE69734946T2 (ja) |
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US20130010818A1 (en) | 2013-01-10 |
JP2005236327A (ja) | 2005-09-02 |
US8630321B2 (en) | 2014-01-14 |
JP3688841B2 (ja) | 2005-08-31 |
EP1701145A3 (en) | 2006-12-27 |
EP0790492A2 (en) | 1997-08-20 |
JP2004088120A (ja) | 2004-03-18 |
DE69734946D1 (de) | 2006-02-02 |
DE69734946T2 (de) | 2006-07-27 |
EP1701145A2 (en) | 2006-09-13 |
EP1701145B1 (en) | 2013-06-19 |
US7580432B2 (en) | 2009-08-25 |
US5778016A (en) | 1998-07-07 |
JP4242364B2 (ja) | 2009-03-25 |
EP0790492B1 (en) | 2005-12-28 |
US20090296749A1 (en) | 2009-12-03 |
US20020097761A1 (en) | 2002-07-25 |
EP0790492A3 (en) | 2000-01-12 |
US8265105B2 (en) | 2012-09-11 |
JPH1096610A (ja) | 1998-04-14 |
US6396856B1 (en) | 2002-05-28 |
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